I'd like to summarize how I installed Java JRE on my MX 18. All code and instructions are courtesy of fehlix. This method should work for any debian based linux.
I downloaded the current Java JRE tar.gz file for linux from the Java website.
https://www.java.com/en/download/manual.jsp That file was downloaded to my Downloads folder.
Then the entire following script was copied and pasted into featherpad.
Code: Select all
#!/bin/bash
# fehlix : my_manual_install_oracle_jre.sh
#
if [ $# != 1 ]
then
echo "Usage $0 <JAVA-TAR.GZ-file (jre-VER-linux-ARCH.tar.gz)>"
exit 1
fi
JAVATAR="$1"
BASENAME=${JAVATAR##*/}
echo $BASENAME
ARCH="$(uname -m)"
case $(uname -m) in
x86_64) ARCH=x64
;;
i386|i586|i686 ) ARCH=i586
;;
*) echo "Architecture >> $(uname -m) << unknown!"
;;
esac
echo "Architecture found: $ARCH"
if [ "$BASENAME" = "${BASENAME%%${ARCH}*}" ]
then
echo "Wrong Architecture JRE-File $JAVATAR"
exit 1
else
echo "OK: Architecture '$ARCH' match JRE-File $JAVATAR"
fi
if [ ! -f "$JAVATAR" ]
then
echo "File not found: $JAVATAR"
exit 1
else
JAVATAR="$(readlink -f $JAVATAR)"
echo "OK absolute path: JAVATAR=$JAVATAR"
fi
sudo -v
sudo whoami
sudo mkdir -p /opt/oracle_java/
cd /opt/oracle_java/
JAVADIR=$(tar --exclude="*/*" -tzf $JAVATAR)
JAVADIR=${JAVADIR%/}
set -x
[ -d /opt/oracle_java/$JAVADIR ] && sudo rm -r "/opt/oracle_java/$JAVADIR"
JAVAPRIOR=$(echo "$JAVADIR" | sed -E 's/[^0-9]//g')
set +x
cd /opt/oracle_java/
sudo tar --no-same-owner -xzvf "$JAVATAR"
set -x
cd /opt/oracle_java/
echo sudo ln -fns $JAVADIR java_latest
sudo ln -fns $JAVADIR java_latest
#############################
# Alternativen nur erneuern falls bereits
# java-Alternativen vorhanden
# Ansonsten beenden!
update-alternatives --get-selections | grep -q "^java" || {
echo "EXIT: Kein Java-Alternativen vorhanden:"
echo "EXIT: Java-ALternativen werden nicht angelegt"
exit
}
#
#############################
# Java-Alternativen erneuern/anlegen
#########################
set -x
cd /opt/oracle_java/$JAVADIR/bin;
set +x
#
for f in *;
do
test -L $f || {
echo sudo update-alternatives --install /usr/bin/$f $f $PWD/$f $JAVAPRIOR
sudo update-alternatives --install /usr/bin/$f $f $PWD/$f $JAVAPRIOR
echo sudo update-alternatives --set $f $PWD/$f
sudo update-alternatives --set $f $PWD/$f
} ;
done
#############################
# nun noch jexec aus lib
#############################
set +x
cd /opt/oracle_java/$JAVADIR/lib;
for f in jexec;
do
test -L $f || {
echo sudo update-alternatives --install /usr/bin/$f $f $PWD/$f $JAVAPRIOR
sudo update-alternatives --install /usr/bin/$f $f $PWD/$f $JAVAPRIOR
echo sudo update-alternatives --set $f $PWD/$f
sudo update-alternatives --set $f $PWD/$f
} ;
done
#############################
#############################
# OK nun die MAN-Pages Slaves:
##############################
cd /opt/oracle_java/$JAVADIR/man/man1
sudo gzip *.1
for M in *.1.gz ;
do
F=${M%.1.gz} ;
test -f ../../bin/$F && {
echo sudo update-alternatives --install /usr/bin/$F $F /opt/oracle_java/$JAVADIR/bin/$F $JAVAPRIOR --slave /usr/share/man/man1/$M $M $PWD/$M
sudo update-alternatives --install /usr/bin/$F $F /opt/oracle_java/$JAVADIR/bin/$F $JAVAPRIOR --slave /usr/share/man/man1/$M $M $PWD/$M
}
done
##############################
echo '#######################################'
echo EXIT
echo Will not install mozilla java plugin !!
echo '#######################################'
exit
##############################
# Manuellen Setzen der Alternative.
# Überprüfen mit:
# update-alternatives --get-selections | egrep -i "java|jdk|icedtea"
case $ARCH in
i586)
#32-Bit:
sudo update-alternatives --install "/usr/lib/mozilla/plugins/mozilla-javaplugin.so" "mozilla-javaplugin.so" "/opt/oracle_java/$JAVADIR/lib/i386/libnpjp2.so" $JAVAPRIOR
sudo update-alternatives --set mozilla-javaplugin.so /opt/oracle_java/$JAVADIR/lib/i386/libnpjp2.so
;;
x64)
#64-Bit:
sudo update-alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so mozilla-javaplugin.so /opt/oracle_java/$JAVADIR/lib/amd64/libnpjp2.so $JAVAPRIOR
sudo update-alternatives --set mozilla-javaplugin.so /opt/oracle_java/$JAVADIR/lib/amd64/libnpjp2.so
;;
*) echo "Kenne Architecture >> $(uname -m) << nicht!"
exit 1
;;
esac
##############################
exit
##############################
Name the file
and save it in the Downloads folder.
Go to the Downloads folder, Then open Thunar File manager by right-clicking and select open Terminal here as normal user - not as root! (try to avoid root terminal as much as possible - this is for experts only).
On the terminal command line type
Code: Select all
chmod +x my_manual_install_oracle_jre.sh
You can abbreviate typing by just typing the first two or three letters of the file name (for example my_m) and than press tab-key, it will auto-complete the filename in the current folder.
Then run the script by typing:
Code: Select all
./my_manual_install_oracle_jre.sh jre-8u191-linux-x64.tar.gz
(Remember to change the version number if different than shown. The current file is jre-8u191)
The script will automatically run and install Java. You can check that it is installed by typing in the terminal: java -version The results should match the Java version number.
My thanks to fehlix for providing this slick way to install Java.
Honest. This is not as easy as I thought it would be to get JAVA installed. Thanks. Ron
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